Show that vectors A=i+3j-2k and vector B=i-j-k are perpendicular(orthogonal)
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Hear VECTOR A =i+3j-2k
B VECTOR =I-j-k
=>A VECTOR. B VECTOR =(i+3j-2k).(i-j-k)=1-3+2=3-3=0
Hear A VECTOR. B VECTOR =0
=>Cos¤=90°
=>They are perpendicular to each other.
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